code: def _adjust_spine_placement(ax):
      """Helper function to set some common axis properties when plotting."""
      ax.xaxis.grid()
      ax.spines["top"].set_visible(False)
      ax.spines["bottom"].set_position("zero")
      ax.spines["right"].set_visible(False)
      ax.set_axisbelow(True)
  
file_path: pennylane/pennylane/fourier/visualize.py
imports: from itertools import product
  import numpy
  from .utils import format_nvec
label_desc: Use image node_id 3 for calling a global function with example usage: _adjust_spine_placement(ax) without return types